Sounds like you've made your decision but I have one more idea. The new Stitch Nation yarn at Joann' is a worsted weight that would work too. I am using the Alpaca Love, 80%wool/20% alpaca, 4 sts = 1 inch in 8 needles or whatever your guage is. Only 4.99.

Wait, that's too much difference which is not 'almost perfect'. A ¼ st per inch over 20 inches is a difference of 5" So you need to use a larger needle, or make a bigger size.

Suzeeq,
I forgot to mention that i am doing a second swatch with size 10 needles. I just wanted to let you know that I have decided to use this yarn.
Thanks borealowl I will check out your yarn suggestion also.

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